It would appear that this ruling essentially eliminates VA-03, NC-12 and similar districts which connect extremely disparate areas to create a majority district
Edit: Apparently NC-12 isn't majority black anyway, so it would almost certainly be dissolved as a result of this ruling.
Does this ruling open the door for them to be contested, or does it mean that if a legislature decides to dismantle them, they will succeed? I would guess there is nothing to prevent the VA and NC legislatures from keeping VA-3 and NC-12 intact if they wanted to. This NC state legislative district conflicted with a state law limiting the circumstances under which counties may be split. I don't think that applies to NC, based on the non-VRA squiggles going on around NC-13's borders.